Решение
1) y=5x^3-7x
y` = 15x² - 7
2) y=8x^-5+13x
y` = - 40x⁻⁶ + 13 = - 40/x⁶ + 13
3) y=15x+√x
y` = 15 + 1/2√x
4) y=4x^3-5x
y` = 12x² - 5
5) y=7x^4-2x^3+4x+5
y` = 28x³- 6x² + 4
6) y=3x^3+7x^5
y` = 9x² + 35x⁴
y=5x^7+3x^3+9
